Telephone set



FIG. 1 is a perspective view of a telephone set showing my new design;

FIG. 2 is a perspective view of the telephone set with the handset in place;

FIG. 3 is a left side view of the telephone set;

FIG. 4 is a right side view of the telephone set; and,

FIG. 5 is a bottom plan view of the telephone set.

The broken line showings of displayed characters in the display window of FIGS. 1 and 2 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a telephone set, as shown and described. 